JY-1A,JY-1C Voltage RelayDetailed product description：

Purpose:
The JY-1 series integrated circuit voltage relay is a static, transient, and AC voltage relay. It can be used in relay protection devices for generators, transformers, and transmission lines as an action element for overvoltage protection or low-voltage interlocking. This relay is composed of an integrated circuit to form an execution circuit, which has the characteristics of high sensitivity, fast action time, low power consumption, and easy setting. The DC power supply and output relay of the relay are monitored by signal indicator lights, and the relay has 2 sets of large capacity conversion contact outputs. Users can directly control the protected equipment according to specific situations (except for JY-1A). The relay action value is set by the dial switch on the panel, which is intuitive and convenient.

Relay model name:

Working Principle:
The input voltage is converted into an appropriate voltage by a voltage to voltage converter, and through the setting of the operating value and active bandpass filtering, it undergoes full wave rectification. The pulsating voltage is compared and integrated, and the detector determines the integration level horizontally. When the integration level exceeds the detection level, the detector outputs a high level to drive the output relay to operate.
This relay adopts a new type of integral judgment circuit, which makes the action time and return time of the relay faster,
Transient surpassing is also small, with strong anti-interference performance.

Instructions for using JY-1A and JY-1C voltage relays:
Firstly, please carefully observe the panel of this relay,
The two ZK switches in the upper left corner are used for setting UD and △ U. For example, you have a UN=100V in your hand
When the UD switch is turned to 10V, the UD setting value is 10V, and so on. You can obtain a setting value of 3V through the switch. If it cannot meet your needs, please use the MN dial switch in the lower left corner for fine adjustment. Please calculate according to the formula U=UD (1+M.N)+Δ U on the panel, as shown in the following example:
UN=100V, you need U=80V. You can first set UD to 10V, and then calculate M=7 and N=0 through the formula. After the above method is set, when the applied voltage U=80V, the right indicator light changes from green to red during normal operation, and the relay acts (DU is usually set to zero).

Main technical parameters of JY-1A and JY-1C voltage relays:
5.1 Rated Value
a) Rated AC voltage: 100V, 400V;
b) Frequency: 50Hz;
c) Rated auxiliary DC voltage: 48V, 110V, 220V.
5.2 Setting range:
When UN=100V, the setting range is 3V~109.5V;
When UN=400V, the setting range is 12V~438V.
5.3 Action time
a) When overvoltage -1.2 times the set value: the action time is not more than 50ms;
b) When the low voltage is 0.8 times the set value, the action time should not exceed 50ms.
5.4 Return time
a) Overvoltage - The instantaneous change in voltage from 1.2 times the set value to zero shall not exceed 50ms;
b) Low voltage - The instantaneous change in voltage from 0.8 times to 1.2 times the set value should not exceed 50ms.
5.5 Action consistency: not greater than 1%.
5.6 Fixed value error: not greater than ± 5%.
5.7 Return coefficient: overvoltage not less than 0.92, low voltage not greater than 1.08.
5.8 Power consumption
AC power consumption: not exceeding 1VA at rated voltage.
DC power consumption: Under rated auxiliary DC voltage, the power consumption before relay action shall not exceed 3W, and the power consumption after action shall not exceed 6W.
5.9 Contact Function
When the time constant is 5ms for an inductive load, the breaking capacity of the relay contacts is not greater than 2A for an AC voltage of 250V, and not greater than 5A for a DC voltage of 24V. (JY-1A: In a DC inductive circuit with a time constant of 40ms, the voltage is not greater than 250V, the current is not greater than 1A, and the breaking capacity of the contacts is 30W).
5.10 Working conditions
a) The atmospheric pressure ranges from 80kPa to 106kPa;
b) Environmental temperature -10 ℃ -+50 ℃;
c) The relative humidity of the air shall not exceed 90% (monthly average minimum temperature of 20 ℃);
d) Strong external magnetic induction intensity is not allowed in the place of use;
e) The place of use does not allow conductive dust or corrosive gases that damage metals and insulation;
f) The place of use does not allow explosive hazards or media filled with dust;
g) The place of use does not allow the presence of severe mold;
h) Strong vibrations and impacts are not allowed in the usage area;
i) The place of use should have rain, snow, wind and sand protection devices and not be filled with water vapor.
5.11 Insulation Resistance
The insulation resistance between the relay housing and each terminal, as well as between electrically unrelated circuits, shall not be less than 300M Ω.
5.12 Dielectric Strength
The insulation strength between the relay housing and each terminal, as well as between electrically unrelated circuits, should be able to withstand an AC voltage of 2kV, 50Hz for 1 minute without flashover or breakdown. The same group of contacts should be able to withstand 1kV, 50Hz AC voltage for 1 minute without flashover or breakdown.
5.13 Anti interference performance
Compliant with GB7261 and GB6261 "Electrical Interference Test for Static Relays and Protection Devices".

Wiring diagram behind the relay:
As shown in Figure 1 (the contacts in the figure are the state when the relay is in a power-off state without applying DC voltage and AC voltage. When the relay is applied with DC auxiliary voltage but the AC voltage is zero, the contact state of the overvoltage relay is the same as that in the figure, while the contact state of the low-voltage relay is exactly the opposite).
Note: When the DC power supply indicated in the back view is 110V, the wiring should be 225 and 222 when the power supply is 220V, and 225 and 224 when the power supply is 48V.

Relay external dimensions and opening dimensions:
Refer to Figures 2 and 6 in the protruding modular insertion structure.

Ordering instructions:
8.1 Relay name and model.
8.2 Auxiliary DC voltage rating and AC voltage setting range or rated AC voltage (if there are special requirements, please specify separately).
8.3 If the contact form is a special requirement, please specify it separately.
8.4 Order quantity.
8.5 JY-1A, 1C relay matching: relay base and several sockets (to be ordered separately).

JY-1A,JY-1C Voltage Relay（No image available）